CN207647856U - Kitchen low-noise fan - Google Patents
Kitchen low-noise fan Download PDFInfo
- Publication number
- CN207647856U CN207647856U CN201721712002.9U CN201721712002U CN207647856U CN 207647856 U CN207647856 U CN 207647856U CN 201721712002 U CN201721712002 U CN 201721712002U CN 207647856 U CN207647856 U CN 207647856U
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- spiral case
- air
- noise
- centrifugal
- guide vane
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Abstract
The utility model discloses kitchen low-noise fans, it includes the spiral case for being provided with air inlet and air outlet, is radially disposed in spiral case centrifugal wind wheel, the centrifugal flow guiding circle for being set to the air inlet, centrifugal flow guiding circle upper surface is provided with the outwardly extending guide vane of polylith, the guide vane, which extends outwardly, to be provided with for guiding the protrusion that primary air direction is close in airflow direction and spiral case, Effec-tive Function is effectively improved airflow homogeneity to reduce noise.Lower closer to protrusion described in centrifugal wind wheel center, the double-deck spiral case reduces noise.The spiral case is double-layer structure, reduces noise and enhances the protection to spiral case internal element.The spiral case is internally provided with silencing cotton and carries out noise reduction, and the vacuum chamber that noise reduction can also be useful in the spiral case internal double layers structure setting carries out noise reduction.
Description
Technical field
The utility model is related to kitchen low-noise fans.
Background technology
Wind turbine is to improve gas pressure by the mechanical energy of input and supply gas side by side the machinery of body, it is a kind of driven stream
Body machinery.Wind turbine is custom abbreviation of the China to gas compression and gas conveying machinery, and usually said wind turbine includes ventilation blower,
Air blower, wind-driven generator.Wind turbine be widely used in factory, mine, tunnel, cooling tower, vehicle, ship and building ventilation,
The ventilation of dust discharge and cooling, boiler and industrial furnace and air inducing；Cooling in the apparatus of air conditioning and domestic electric appliance and logical
Wind；It the drying of cereal and selects and recommends, inflation and propulsion of wind-tunnel wind regime and aircushion vehicle etc..
Currently in order to increasing the air draught effect of wind turbine, air quantity is increased, rotating speed is high, and air inlet direction is single, and intake velocity is small, gas
Stream equably cannot enter air duct from baffle liner, be easy to cause air-flow and mutually hit, and air-flow is caused to generate resonance with complete machine wall surface,
Sound pulsation is increased, but noise is also following, significantly impacts indoor environment.
In consideration of it, it is the art urgent problem to be solved to overcome the defect present in the above-mentioned prior art.
Utility model content
The technical issues of the utility model solves is to provide a kind of kitchen low-noise fan having high-efficient noise-reducing.
Technical solution adopted by the utility model to solve its technical problems is：Kitchen low-noise fan include be provided with into
The spiral case of air port and air outlet, radial device and centrifugal wind wheel in spiral case, the centrifugal flow guiding circle for being set to the air inlet,
Centrifugal flow guiding circle upper surface is provided with the outwardly extending guide vane of polylith, and the guide vane, which extends outwardly, to be provided with for guiding gas
Flow the direction protrusion close with primary air direction in spiral case.
It is further：It is lower closer to protrusion described in centrifugal wind wheel center.
It is further：The spiral case is built-in with air intake casing, and there are gaps between the air intake casing and spiral case.
It is further：It is provided with silencing cotton between the air intake casing and spiral case.
It is further：It is vacuum chamber between the air intake casing and spiral case.
The utility model has the beneficial effects that：Effec-tive Function is effectively improved airflow homogeneity to reduce noise；The double-deck snail
Shell reduces noise；Silencing cotton is placed inside double-layer structure reduces noise；Vacuum noise reduction.
Description of the drawings
Fig. 1 is the schematic diagram of centrifugal flow guiding circle.
Fig. 2 is the schematic diagram of kitchen low-noise fan.
In figure label for：Air inlet 11, air outlet 12, spiral case 1, centrifugal wind wheel 2, guide vane 5, protrusion 51, air intake casing 6.
Specific implementation mode
The utility model is further illustrated with reference to the accompanying drawings and detailed description.
As depicted in figs. 1 and 2, kitchen low-noise fan includes the spiral case 1 for being provided with air inlet 11 and air outlet 12, radial direction
The centrifugal wind wheel 2 being set in spiral case 1, the centrifugal flow guiding circle 4 being set at the air inlet 11, on the centrifugal flow guiding circle 4
End face is provided with the outwardly extending guide vane 5 of polylith, and guide vane 5 guides the flow direction phase in the direction and primary air in spiral case 1 of air-flow
Closely, guide vane 5 can arrange along the annular gap of centrifugal flow guiding circle 4, and guide vane 5 improves the flowing that air-flow flows into air duct in spiral case 1
Uniformity.The guide vane 5, which extends outwardly, to be provided with for guiding the protrusion that primary air direction is close in airflow direction and spiral case 1
51.The air-admitting surface for reducing centrifugal wind wheel 2 by additional increased raised 51, to increase the air draught speed of air inlet 11,
Improve the air draught ability to air inlet surrounding flow.Protrusion 51 is reinforced inside the rapid inspiration spiral case of air-flow at air inlet 11 1
Wind speed improves operational efficiency.
As shown in Figure 1, lower closer to protrusion 51 described in 2 center of centrifugal wind wheel.Reinforce wind speed, improves the same of operational efficiency
When effectively prevent protrusion 51 stop air-flow enter spiral case 1.
As shown in Fig. 2, the spiral case 1 is double-layer structure.The spiral case 1 is built-in with air intake casing 6, air intake casing 6 and snail
The pressing plate of shell 1, screw connection.There are gaps, the gap to form cavity, the cavity between the air intake casing 6 and spiral case 1
Reduce the protection of noise and double-layer structure enhancing to 1 internal element of spiral case.
As shown in Fig. 2, being provided with silencing cotton between the air intake casing 6 and spiral case 1.Silencing cotton is positioned over air intake casing
In the cavity formed between 6 and 1 side wall of spiral case, further noise reduction.
As shown in Fig. 2, being vacuum chamber between the air intake casing 6 and spiral case 1.Air intake casing 6 and 1 formed by integrally casting of spiral case at
Type, the cavity formed between air intake casing 6 and spiral case 1 are evacuated, are then sealed by rubber seal plug so that air intake casing
The cavity inside formed between 6 and spiral case 1 is vacuum, reduces noise.
Particular embodiments described above has carried out into one the purpose of this utility model, technical solution and advantageous effect
Step is described in detail, it should be understood that the foregoing is merely specific embodiment of the utility model, is not limited to this
Utility model, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done should all wrap
Containing being within the protection scope of the utility model.
Claims (5)
1. kitchen low-noise fan, including it is provided with the spiral case (1) of air inlet (11) and air outlet (12), is radially disposed at and snail
Centrifugal wind wheel (2) in shell (1), the centrifugal flow guiding circle (4) being set at the air inlet (11), the centrifugal flow guiding circle (4)
Upper surface is provided with the outwardly extending guide vane of polylith (5), it is characterised in that：The guide vane (5), which extends outwardly, to be provided with for drawing
Flow guide direction and the close protrusion (51) in the interior primary air direction of spiral case (1).
2. kitchen low-noise fan according to claim 1, it is characterised in that：Described in centrifugal wind wheel (2) center
Raised (51) are lower.
3. kitchen low-noise fan according to claim 1, it is characterised in that：The spiral case (1) is built-in with air intake casing
(6), there are gaps between the air intake casing (6) and spiral case (1).
4. kitchen low-noise fan according to claim 3, it is characterised in that：The air intake casing (6) and spiral case (1) it
Between be provided with silencing cotton.
5. kitchen low-noise fan according to claim 3, it is characterised in that：The air intake casing (6) and spiral case (1) it
Between be vacuum chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721712002.9U CN207647856U (en) | 2017-12-11 | 2017-12-11 | Kitchen low-noise fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721712002.9U CN207647856U (en) | 2017-12-11 | 2017-12-11 | Kitchen low-noise fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207647856U true CN207647856U (en) | 2018-07-24 |
Family
ID=62880349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721712002.9U Active CN207647856U (en) | 2017-12-11 | 2017-12-11 | Kitchen low-noise fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207647856U (en) |
-
2017
- 2017-12-11 CN CN201721712002.9U patent/CN207647856U/en active Active
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| GR01 | Patent grant | ||
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